<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 2.为Echarts准备一个Dom -->
      <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
  // 1.导入echarts
  import * as echarts from 'echarts'
  import _ from 'lodash'
  export default {
    name: 'Report',
    data () {
      return {
        // 需要合并的数据
        options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
      }
    },
    created () {

    },
    // 此时,页面上的元素,已经被渲染完毕了
    async mounted () {
      // 3.基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main'))
      const { data: res } = await this.$http.get('reports/type/1')
      if (res.meta.status !== 200) return this.$message('获取折线图数据失败!')
      // 4.准备数据项和配置项
      // 指定图表的配置项和数据
      // var option = {
      //   title: {
      //     text: 'ECharts 入门示例'
      //   },
      //   tooltip: {},
      //   legend: {
      //     data: ['销量']
      //   },
      //   xAxis: {
      //     data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
      //   },
      //   yAxis: {},
      //   series: [{
      //     name: '销量',
      //     type: 'bar',
      //     data: [5, 20, 36, 10, 10, 20]
      //   }]
      // }
      // 数据合并
      const result = _.merge(res.data, this.options)
      // 5.展示数据
      myChart.setOption(result)
    },
    methods: {

    }

  }
</script>

<style scoped>

</style>
